I’m looking to upgrade my existing Humminbird 565 fish finder. I’ve always quite fancied a combo unit though the prices are generally quite prohibitive!. However, I’m heading off to the States later this year and intend to take advantage of the cheaper prices. I’m not bothered about side imaging, a little too much for me. However, I’m quite impressed with what I’ve seen of down imaging (DI) sonar. The down Imaging views are focused directly beneath the kayak, giving a detailed look at structure and the water column.
Some Humminbird units allow you to select between DI and traditional 2D sonar, a feature which I like. I’ve currently narrowed my choice down to either a 788ci HD DI or a 597cxi HD DI. There’s about a $70 price difference and I’m still researching to see what the real advantages of DI are whilst getting as much feedback as possible. To that end if you have any experience of DI, especially with Humminbird, please feel free to comment.